Opera to Webkit
Opera is a big thing here in post-soviet countries. For unknown reasons Opera had more than half of Georgian browser market only few years ego. Today, after Google Chrome is getting popular, Opera's dominance keeps declining.
I was one of the most raging Opera hater, just because of it's rendering bugs and total lack of care on standards. Today I feel that my words from 2005 are slowly becoming reality.
I believe that all browsers have to switch one standard engine (Web-kit in this case, because it's my favourite) and compete in user experience and performance.
Microsoft, Mozilla, your turn.